propogate exceptions to caller

[d79ima]

I noticed occasionally call to ServiceBrowser.Browse would result in exception being silently thrown, which i only noticed on the debugger in Visual Studio:
Exception thrown: 'ArkaneSystems.Arkane.Zeroconf.Providers.Bonjour.ServiceErrorException' in Arkane.Zeroconf.dll

Exception is being silently dropped in Providers/Bonjour/ServiceBrowser.cs Start(async = true) method.
Because of this.task = Task.Run (() => this.ProcessStart ()).ContinueWith (_ => this.task = null) ;
Task.Run just drops any exceptions thrown by ProcessStart().

Could you please provide a public API that is friendly with async/await that exposes Task as a return value so caller can decide how best to handle exceptions on async calls.
Or at a minimum provide an option to use Synchronous Browse and let caller handle async routing on their own

[cerebrate]

Exception is now propagated upwards, per first version of this issue. Considering further updates.